• Lakes and Ponds are bodies of freshwater that are found in all types of environments and on all continents
  • Rivers and streams may also run into or out of the pond and can eventually merge into other bodies of water
  • The surrounding biomes to lakes and ponds are Freshwater Wetlands
  • A pond is a body of water shallow enough to support vegetation and many rooted plants
  • A lake is much larger than a pond, but is too deep to support vegetation and rooted plants
This is a lake
This is a lake
This is a pond
This is a pond


Water temperatures in lakes during summer months differ in layers.
Three distinct layers develop:

  • The top layer stays warm at around 65–75 degrees F (18.8–24.5 degrees C).
  • The middle layer drops dramatically, usually to 45–65 degrees F (7.4–18.8 degrees C).
  • The bottom layer is the coldest, staying at around 39–45 degrees F (4.0–7.4 degrees C).

external image Pond%201.jpg

Human Impacts

  • Water is the basis of life, it supports life, and countless species live in it for all or part of their lives
  • It supplies us[humans] with drinking water and water for crop growing.
  • Water has a high capacity for heat and earth is mostly covered with water, so the temperature of the atmosphere is kept fairly constant and able to support life.
  • Plankton which account for most of the photosynthesis on Earth found in lakes, ponds and oceans. Without, there might not be enough oxygen to support such a large world population and complex animal life.
  • We fish from the ponds and we often eat the fish we catch.
  • Most of the time our water comes from the lakes and ponds, but purified.

"Earth is mostly covered with water"
"Earth is mostly covered with water"


  • Freshwater biomes have suffered mainly from pollution.
  • Runoff containing fertilizer and other wastes, and industrial dumpings enter into rivers, ponds, and lakes tend to promote abnormally rapid algae growth.
  • When algae die, dead organic matter ends up in the water. This makes the water unusable, and it kills many of the organisms living in the habitat.
Polluted, dead waste, & unusable water.
Polluted, dead waste, & unusable water.


  • The lakes and ponds provide a great service for water life, if not polluted.
  • They produce some of the Earth’s oxygen, while absorbing large amounts of carbon dioxide, that may be harmful to us humans.
  • The evaporation of the water also provides rainwater for the land.


  • The slimy scum you see on the surface of a pond or lake is lunch for many of your favorite aquatic [water] animals.
  • One important freshwater animal in the United States is the trout which people love to fish for and hunt in lakes and ponds, could be shipped other places for $.
"Slimy scum you see on the surface of a pond or lake is lunch for many"
"Slimy scum you see on the surface of a pond or lake is lunch for many"


  • Water could be jugged up in a gallon carton and sold to different people all over the world and have a good impact on money, as well as helping people not starve to death.
  • The fish that live in the water could be sold, non contaminated, again to everyone around the world.
  • Water could be sold by the bottle to schools and a lot of places on the earth so the US makes a profit off of selling.

"Water could be sold by the bottle"
"Water could be sold by the bottle"
"Fish that live in the water could be sold, non contaminated"
"Fish that live in the water could be sold, non contaminated"

Ecosytems in a Lake/Pond Environment

  • Lakes are a crucial habitat for a vast array of both plants and animals including bacteria, fungi, algae, plankton, mussels, snails, crustaceans, insects, fish, amphibians, reptiles, birds and mammals.
  • Not only that, but the human communities that surrounds lake are heavily dependent on the lake’s biodiversity and natural lake processes for their way of life.

Zones of Lakes/Ponds and the Plants and Animals that Live There

Zone 1: Littoral Zone

  • This zone is closer to shore. Animals such as tiny crustaceans, flatworms, insect larvae, snails, frogs, fish, and turtles exist in this zone.
  • Here light reaches all the way to the bottom. The plants are rooted to the bottom and algae attached to the plants and to any other solid substrates.

Zone 2: Limnetic Zone

  • This is the layer of open water where photosynthesis can occur.
  • The limnetic zone is shallower is turbid water than in clear and is a more prominent feature of lakes than of ponds.
  • Life in the limnetic zone is dominated by floating microorganisms called plankton and actively swimming animals called nekton.
  • The plants in this ecosystem are planktonic algae
  • The primary consumers include such animals as microscopic crustaceans and rotifers; or the so-called zooplankton.
  • The secondary and higher consumers are swimming insects and fish. These nekton usually move freely between the littoral and limnetic zones.

Zone 3: Profundal Zone

  • Many lakes and very few ponds are so deep that not enough light reaches here to support net primary productivity. Therefore, this zone depends for its calories on the drifting down of organic matter from the littoral and Limnetic zones.
  • The Profundal zone is chiefly inhabited by primary consumers that are either attached to or crawl along the sediments at the bottom of the lake or pond.
  • Such bottom-dwelling animals are called the benthos.
  • The sediments underlying the Profundal zone also support a large population of bacteria and fungi. The decomposer breaks down the organic matter reaching them, releasing inorganic nutrients for recycling.

"Zones of lakes/ponds and the plants and animals that live there"
"Zones of lakes/ponds and the plants and animals that live there"
Visual graphic of plankton nekton & benthos.
Visual graphic of plankton nekton & benthos.

Sources[sites] used:

[you may look for more information]

Location/Geography- http://www.mbgnet.net/fresh/lakes/index.htm, http://lib.colostate.edu/wildlife/freshwater_biome.html
Human impacts & stresses- http://www.ucmp.berkeley.edu/exhibits/biomes/index.php
Services- http://en.wikibooks.org/wiki/FHSST_Biology/Contents/Index/ES/Ecosystems/Biospheres,_biomes_and_ecosystems
Goods- http://www.nceas.ucsb.edu/nceas-web/kids/biomes/freshwater.htm
Exports- common sense
Ecosystems in Lake Environment- http://www.worldlakes.org/Biodiversity.htm
Zones of Lakes- http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/Freshwater.html

Information Posted by:

Reginald- Vegetation types & Adaptations / Animals of Biome & Adaptations (Zones of Lakes/Ponds + Ecosystems in Lakes/Ponds)
Kirsten- Climate
Ashtyn- Goods/Services/Exports & Human impacts & stresses.
Rachel- Location/Geography & Climate


Location, geography, climate, human impacts, stresses, goods, and exports photos - Ashtyn
Zones of lakes/ponds, and plankton photos - Reggie